Estimateswhat organizations can do to ensure that estimates are good? to begin with, estimation especially of cost is very critical during project management. however, there are some ways in which organizations can make to ensure good estimates. they include; controlling baseline costs: these is the amount of money spent on maintain established it systems and accumulate large percentage because of the addition of new systems every time. however they can be controlled by renegotiating vendor contracts, reexamineservice levels and by managing assets effectively.understanding long-term application costs: these are costs associated with application support, operations and maintenance, licenses and infrastructure. when controlled effectively can lead to good estimates.leverage current system investments: all applications and purchased software, infrastructure and networks should be reviewed on annual basis to guarantee that maximum value is extracted and original goals are met. other ways include; implementing short-term cost cutting measures.implementing long-term cost cutting measures.implementing pricing and change back mechanisms. how to prevent cost overrunspaying a lot of attention to project planning: this is the most important stage in project development and by planning there is less likel